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Here is a summary in bullet points with a key quote from the section “Weak Bodies, Strong Minds?” of The Mating Mind:
✅ Summary – “Weak Bodies, Strong Minds?”
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Human evolution may involve a trade-off between physical strength and mental ability.
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Mid-20th-century theorists believed the human body is a weakened version of the stronger, more robust ape body.
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The theory suggested that our bodily weakness led to greater brain power, helping early humans survive through intelligence.
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Science fiction writer Robert Heinlein imagined future humans as even weaker but far more intelligent—extending the pattern into space-age evolution.
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Anthropologist Ashley Montagu promoted the idea of neoteny—that humans retain youthful, flexible, childlike bodies into adulthood.
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This childlike body may have helped humans become more adaptable, social, and culturally advanced.
💬 Key Quote
“Humans were allegedly ten times weaker and ten times smarter than chimpanzees.”
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Got it! You’re looking at explanations of human aesthetics and how different theories stack up:
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Runaway theory: Suggests preferences get amplified over generations (like peacock tails), but it doesn’t really explain why we have the specific preferences we do.
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Sensory bias theory: Proposes that aesthetic preferences arise from pre-existing sensory preferences (maybe shared with other apes). But since those biases don’t closely match human aesthetic tastes, this theory falls short too.
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Fitness indicator theory: Seems more promising — it suggests that aesthetic preferences evolved because they signal underlying biological fitness, so it might better explain why we have particular tastes.
Are you exploring how fitness indicator theory might better explain human aesthetics compared to runaway and sensory bias? Want help summarizing or expanding on that?
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Why Do Women Have Higher Verbal Ability
than Men, if Language Was Sexually Selected?
This is a classic puzzle in sexual selection and language evolution:
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Observation: Women tend to outperform men on verbal ability measures (like vocabulary size), while men tend to have higher spatial and mathematical abilities.
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Sexual selection prediction: Typically, sexual selection favors males evolving larger or more elaborate traits (ornaments) to attract mates.
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The puzzle: If language evolved as a sexual ornament—primarily driven by male competition and female choice—you’d expect men to have superior verbal abilities, but instead, women do.
Is this a fatal problem for the sexual selection hypothesis of language evolution?
Not necessarily! Some possible ways to reconcile this:
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Different roles in sexual selection: Maybe men used language more for display, but women developed stronger verbal skills for social bonding, child-rearing, or other functions that also conferred fitness advantages.
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Sexual selection acting on different traits: The verbal ornament might have been in men, but women’s higher verbal ability could reflect selection for other reasons, like more efficient communication with offspring.
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Complex evolutionary pressures: Language is multifunctional—sexual selection is only one piece of the puzzle; natural selection, social selection, and cultural evolution also shape abilities.
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Measurement differences: Verbal ability tests might capture certain skills more developed in women but miss others where men might excel in communicative or performative language use.
So, while it poses a challenge, it doesn’t necessarily disprove language’s sexual selection origins. It just means the story is more nuanced.
Want to dig deeper into any of these explanations?
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